The GNUstep Base Library is a powerful fast library of general-purpose, non-graphical Objective C classes, inspired by the superb OpenStep API but implementing Apple and GNU additions to the API as well. It includes for example classes for unicode strings, arrays, dictionaries, sets, byte streams, typed coders, invocations, notifications, notification dispatchers, scanners, tasks, files, networking, threading, remote object messaging support , event loops, loadable bundles, attributed unicode strings, xml, mime, user defaults. This package includes development headers too.